It is possible that more interesting articles are posted in the afternoon due to the work habits of the people who actually create the content that is being lin

It is possible that more interesting articles are posted in the afternoon due to the work habits of the people who actually create the content that is being linked, and posts linking these articles happening in a short time span. It may be possible to correct for this by only including links that are for content that was already "old" at the time of posting?